<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Product Monthly Sales</title>
<style>
table {
    width: 100%;
    border-collapse: collapse;
    font-family: Arial, sans-serif;
}
th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}
th {
    background-color: #4CAF50;
    color: white;
}
tr:nth-child(even) {
    background-color: #f2f2f2;
}
tfoot {
    font-weight: bold;
    background-color: #ddd;
}
</style>
</head>
<body>

<table>
<thead>
    <tr>
    <th>ID</th>
    <th>产品名称</th>
    <th>销量</th>
    </tr>
</thead>
<tbody>
    <tr>
    <td>2021090901</td>
    <td>马克杯</td>
    <td>5000</td>
    </tr>
    <tr>
    <td>2021090901</td>
    <td>啤酒杯</td>
    <td>5200</td>
    </tr>
    <tr>
    <td>2021090901</td>
    <td>塘瓷杯</td>
    <td>3500</td>
    </tr>
</tbody>
<tfoot>
    <tr>
    <td colspan="2">合计</td>
    <td>13700</td>
    </tr>
</tfoot>
</table>

</body>
</html>